[Mongrel] Invalid HTTP format, parsing fails

Ross Singer ross.singer at library.gatech.edu
Fri Aug 25 07:19:25 EDT 2006

Well, the urgency of this has waned a bit, since I successfully got
lighty/fcgi working last night.

Still, I've been pretty fond on mongrel, so far, so I'd like to migrate back
to it eventually.


On 8/24/06, Ross Singer <ross.singer at library.gatech.edu> wrote:
> Hi,
> I am having a bit of a problem with my app that is using mongrel.
> For a particular vendor we use, they are generating links that look like:
> http://umlaut.library.gatech.edu/resolve?genre=article&issn=00224898&title=Journal+of+Terramechanics&volume=43&issue=4&date=20061001&atitle=Requirements+and+system+design+for+a+robot+performing+selective+cleaning+in+young+forest+stands.&spage=505&sid=EBSCO:aph&pid=Vestlund%2c+Karin%3bHellstr%c3%b6m%2c+Thomas
> >>2183092720061001aph
> (pardon the awfulness of OpenURL query strings)
> Which for IE gives the user:
> Thu Aug 24 18:12:48 EDT 2006: BAD CLIENT ( Invalid HTTP format,
> parsing fails.
> I am not entirely sure, but I think too many of these eventually bring
> mongrel down completely (mongrel keeps stopping, it may or may not be
> related).
> Firefox and its ilk properly escape these query strings, so those users
> aren't affected by it (except, of course, when mongrel goes down
> completely).
> Removing the ">>" eliminates the problem in IE.
> I've placed a call to the vendor in question to please stop doing this,
> but I don't know if I'll get any response, and, besides, it's quite possible
> I'll see more invalid characters from other sources in the future.
> Webrick also fails in exactly the same way on the same queries.  FastCGI
> doesn't (as far as I can tell), but I also haven't had any luck getting
> FastCGI working with this app.
> I'm using mongrel in production and in development (the
> link above).
> Thanks for any help you can offer on this,
> -Ross.
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